【单选题】I had neither a raincoat nor an umbrella ____I got wet through.
【单选题】怎样使一张照片的颜色更鲜艳?
A.
通过“图像>调整>亮度/对比度”命令,调整亮度数值
B.
通过“图像>调整>色相/饱和度”命令,调整饱和度数值
C.
通过“图像>调整>色调分离”命令,调整色阶数量
【单选题】The record of the past half century has established, I think, the two general principles about human disease. First, it is necessary to know a great deal about underlying mechanisms before one can rea...
A.
Scientific appraisal shows that multifactorial diseases are often due in part to environmental conditions.
B.
In the past half century, scientists have been able to find only a few principles that apply to all diseases.
C.
Each disease has single underlying mechanism that must be understood before the disease can be cured.
D.
Many diseases that were once life-threatening can now be cured by antibiotics.
【单选题】ZX7-02-11一束单色光垂直入射在光栅上,衍射光谱中共出现5条明纹,若已知此光栅缝宽度与不透明部分宽度相等,那么在中央明纹一侧的两条明纹分别是第____级和第____级谱线。
【简答题】公差等级的选择原则是 前提下,尽量选用 的公差等级。
【单选题】天海公司2019年购买商品支付500万元(含增值税),支付2018年接受劳务的未付款项50万元,2019年发生的购货退回15万元,假设不考虑其他条件,天海公司2019年现金流量表“购买商品、接受劳务支付的现金”项目中应填列( )万元。
【简答题】A. neither B. thought C. thick D. through